Drilling-machine.



' J. S.- SURBAUGE.

DRILLING" MACHINE; APP'LIOATION FILED H7119. 1m.

m wary/Mk2 PATENTBDJUNE 25, 1907.

2 saws-sum" No. 858.311. PATENTED JUNE 25, 1907. J. s. SURBAUGH. r

DRILLING MACHINE. ABPLIOATIOI FILED FEB. 19, 1906.

2 sums-sum Tn: "0km: PETERS co lusunvcron, o. c.

UNITED STATES PATENT. OFFIGE.

No. 858,311. Specification Application filed February f Letters Patent.

19,1906. Serial No. 301,927.

Patented June 25, 1907.

To all whom it may concern:

Be it known that 1, JOHN S. SURBAUGH, a citizen of the United States of America, and a resident of Terre Haute, Vigo county, Indiana, have invented a new and useful Drilling-Machine, of which the following is a specification.

One object of this invention is to provide improved means for supporting the threadbar of a drill.

A- further object of this invention is to provide improved means for detachably connecting a driving gear to the support and thread-bar of a drill.

A further object of this invention is to provide improved means for reversibly and detachably connecting a driving gear to the support and thread-bar of a drill.

A further object of this invention is to pro-- vide an economical and convenient method of forming a seat or bearing for a'driving gear in the boxing of a drill.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated by the accompanying drawing, in which Figure l is a perspective illustrating the construction and manner of mounting of my improved device. Fig. 2 is a detail view illustrating the construction and manner of opening the feeding box of the thread-bar. Fig. 3 is a view of the device closed, taken opposite to Fig. 2. Fig. 4 is a cross-section on the indicated line 44 of Fig. 3. Fig. 5 is a longitudinal section of the device through the thread-bar and boxings.

In the construction of the machine as shown, a support known as a post is employed, which post is composed of parallel side-bars 10, 11 connected at one end to a post-extension casting 12 adapted to receive and be secured to a boot or stem 13, and connected at the opposite end to a jack-screw casting 14 adapted to receive and be threaded to a jack-screw 15. The outer end portions of the boot or stem 13 and jack-screw 15 are pointed and are adapted to engage the walls, floor or ceiling of a room being mined and support the post in a common and wellknown manner. Notches 16 are formed in the outer margins of the parallel side-bars 10, 11 and are arranged in transversely-alining pairs. Afeeding-box or screw-box is provided and is formed in mating sections 17, 18. The section 17 of the feeding -box is formed with laterally extending ears 19, 20 and trunnions 21, 22 extending farther laterally from said ears, said trunnions adapted for pivotal mounting in pairs of the notches 16 in the side-bars 10, 11 of thesupporting post, whereby the feeding-box and threadbar therein may be oscillated on various angles relative to said post. The inner surface of the section 17 is concaved on the half of a circle and is threaded. The ear 19 is embraced by ears 23, 24 and a hinge-pin 25 is mounted through alining apertures in said ears and serves to hinge the sections together. The ear 20 is oflset laterally of its normal trend and is adapted to be embraced by lugs 26, 27 on the section 18, and a key 28, flexibly connected to the extremity of the trunnion 22, is adapted to be removably and replaceably mounted in an. aperture in the ear and confine said lugs, thus latching the sections together. The inner surface of the section 18 is concaved on the half of a circle transversely and is threaded. A semicylindrical boss 17 a is formed on one end portion of the section 17 and is molded with a semi annular groove 29, and a mating boss 18 is formed on the section 18 and is formed with a mating groove 30.

An angle-arm 31 is provided and is formed with a box (or journal bearing) 32 on one end and a box (or journal bearing) 33 on the opposite end and at right angles to the firstbox. The box 32 is provided with diametrically-arranged lugs 34, 35, each formed with a central groove or notch in its outer face and extending a part of its length to li hten it one or another of which lugs may e engaged with a notch 36 in a projection 17 extending longitudinally from the outer margin of the boss 17 and prevent torsional movement of the box and arm 31 relative to the box-sections 17, 18. When in one position lug is disengaged, and when the machine is reversed, the lug 35 engages said projection and the lug 34 is disengaged, thus providing an interlocking device 1n either position of the driving mechanism in respect of the right or left rib or Wall of a mine room. A miter gear 37 is provided and is formed with a hollow. hub 38 journaled in the box 32. A groove 39.is turned in one end portion of the box 32, thus forming a peripheral flange 40 adapted for non-rotatable yet reversible seating in the grooves 29, 30 when the sections 17, 18 of the box are closed tothe lug 34 engages the projection 17 and the gether. Experience has demonstrated the desirability of turning-the peripheral flange 40 true to fit the grooves 29, 30, since any play or vibration of said flange in said grooves such as occurs when polygonal construction is employed by the prying of the flange on the box members, wears out first the threads on that end of the box members. The sections 17, 18 may be closed and the grooves 29, be turned or machined to fit the peripheral flange but I also can provide a perfect fit, alinement and stable relation between the driving mechanism and feeding-box by making the flange 40 of less diameter and thickness than the combined grooves 29, 30 and filling the space between them with Babbitt metal 41 through holes 42 when the boxsections are closed around said flange. The virtue of this construction also is dependent on the circular turned flange 40, without which the leverage on the box-members and Babbitt filling would not be equal. Turning the groove 39 and flange 40 and filling with Babbitt metal, obviates turning and truing the grooves 29, 30 and saves materially in the labor and time of making the device. The inter-engagement of the flange 40 with the babbitted bearings in the bosses 17 18 and of one or the other of the lugs 34, 35 with the notch 36, provides an alining and stable connection between the box 32 and the feeding-box, which connection insures free and smooth operation of the hub 38 and thread-b ar and also provides a non-rotatable yet reversible connection between said boxes. A thread-bar 43 is provided, of a size to fit the threaded bore of the feeding-box and of any desired length. The thread-bar 43 is formed with one or more longitudinal grooves or splii1eseats.44, 45 engaged by splines 46, 47, (see cross-section Fig. 4) on the hub 38. The inner surface of the hub 38 is not threaded. Each end portion of the thread-bar 43 is shaped (preferably by angular cross-section) respectively to receive attachment of a drill,

it, auger or auger extension, and also to be engaged by a crank to rotate the thread-bar at times. A shaft 48 of standard size is mounted for rotation in the box 33 and a miter gear 49 is mounted rigidly on the inner end portion of said shaft and meshes with the miter gear 37. A crank 51 is provided with seats 52, 53 adapted to receive an angular end portion of the shaft 48 or either end por tion of the thread-bar 43 and rotate said members at times. A split key may be mounted in a hole 54 in the shaft 48 to retain the crank 51 thereon.

On occasion it is desirable to open the sec tions 17, 18 and remove the thread-bar and driving gearing and replace the thread-bar alone in the feeding-box and rotate the same (and consequently rotate the drill or auger not shown) by direct application of the handcrank 51 (through the medium of one or anpower, and the differently-located seats 52,

53 are provided to utilize more or less power in such application thereof.

While I have illustrated one form only of interlocking connection between the box 32 and feeding-box, it is obvious that other devices effecting non-rotatable, yet reversible, relations between those parts may be employed without departing from the scope of my invention. In like manner do I encompass various latching devices for connecting the sections of the feedingbox, illustrating for convenience only the preferred form thereof. It also is to be understood that the thread-bar and shaft 48 may be shaped at their ends in any desired manner, so long as such shape provides for attachment thereto of a crank or auger, bit, drill or extension.

I claim as my inventi0n- 1 A frame for a driving mechanism, comprising bearing boxes arranged at right angles to each other, one of said bearing boxes formed with a peripheral flange and also formed with plurality of lugs at diametrically opposite points on and radiating from said box and independent of and auxiliary to said flange, a driven gear j ournaled in one of said bearing boxes, a journal mounted in the other bearing box, and a driving gear mounted on said journal, said gears in mesh with each other.

2. A frame for a driving mechanism, comprising bearing boxes arranged at right angles to each other, one of said bearing boxes formed with a peripheral flange and also formed with a plurality of lugs at diametrically opposite points on and radiatingfrom said box and independent of and auxiliary to said flange.

3. In a drilling machine, a feeding-box formed in sections hinged together, each section having a boss 011 one end, each. boss formed with a mating half of an annular groove, a bearing-box formed with an annular flange mounted in said annular groove, one of the bosses formed with a longitudinal projection having a notch in its extremity, lugs opposite each other on the bearmgbox, one or the other of said lugs in engagement with said notch, a gear in said bearing box, a thread-bar in said feeding-box and splined to said gear, means for rotating said gear and means for latching together the sections of the feeding-box.

4. In a drilling machine, a feeding-box formed in sections hinged together, one of said sections formed with trunnions, each section having a boss on one end, each boss formed with a mating half of an annular groove, one of the bosses formed with a longitudinal projection having a notch in its extremity, and means for latching said sections together.

5. In a drilling machine, a feeding-box formed in sections hinged together, one section formed with lateral trunnions adapted to support thelbox, each section having a boss on one end, each boss formed with a mating half of an annular groove, a bearingboX formed With an annular flange mounted in said annular groove, one of the bosses formed With a longitudinal projection having a notch in its extremity, lugs opposite each other on the bearing-box, one or the other of said lugs in engagement with said notch, a

gear in said bearing-box, a thread-bar 1n said I 5 feeding-box and splined to said gear, means for rotating said gear and means for latching together the sections of the feeding-box.

Signed by me at Terre Haute, Indiana, this tenth day of Februar 1906.

JOHN SURBAUGH. Witnesses:

S. A. DALE,

MABELLE M. TELLEY. 

